Engine.



G. T. LAUGHTON.

ENGINE.

APPLIOATIOH FILED JAN. 7, 1910.

PatentedJuly 8, 1913.

2 SHEETS-8HEET 1.

311mm I How G. T. LAUGHTON.

I ENGINE. v Anmdulqn rum) nu. 7, 1910.

1,066,740. Patented July 8,1913.

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STATES PATENT IC CHARLES r. LA GHTQN, or GUYMON, oxiia'noma ENGINE.

To aZZ'whm-n, it may concern; 7

Be it known that'Lj-Cnannss T. LAUGH- Tox, citizen of the United States, residing at Guymon, in the county. of Texas. and Stateof. Oklahoma, have invented certain v new and useful Im movements in Engines,

ofwhich the following is a specificatiqn.

This invention relates to 'gas-enginesand has for its 'object'the provision of an interefi'eeted by alternate explosions atthe opponalcombustion engine of simple and compact construction, capable of developing maximum power with a minimum consumptionbffuel. f

A. further objectis to provide a gas enginein which the movement .ofthe'piston is I i site endsOf'Ihe cylinden;

A .further ob ect,;is to provide a novel formof valve for controlling-the admission of, fuel alternatelyto the combustion cham- Af'stiltfurther object "of mementos is generally to improvethis class ofdevices so to increasetheir ut-ility durability and JFuitheriobjects and advantages will ap- 'pear in'the, following description, it being understood that various. changes in, form, proportions and minor details of construction may be resorted to; within the scope of the appended claim. Y

For a full understanding of the invention and the merits thereof and also to acquire a knowledge-of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings. in -which:

.Figire l is a to plan view of'agas engine constructed in accordance with my 1nvention; Figf2 is a vertical sectional view -.ofthe same partly in elevation; Fig. 3 is an to in the following description and indicated in all-the views ofthe drawings by the same referenoecharacters. v

I 'S1iecifi'cation Br Letter s ratent. application filedJanuary'7,1910.. Serial m3. 536,935;

' iatented The gasiengine forming the subject 'matter ,of the present invention comprises a cylinder 5 mounted ona suitable supportin base 6 and provided with-spaced guides in which is slidably mounted a reciprocatingcross head 8. *Slidably mounted in the cy'linder 5 is a follower or;piston 9, the rod 10 of which passes through a suitable gland 11 for connection with the cross head8.

supporting base 6, is a driving'shaft '13 hav- J ournaled in bearings 12 on one end of the -ing a terminal crank arm 14, the latter being connected through the medium of a pitman.15 with the cross'head 8, as shown.

The cylinder Sis provided with oppositely disposed combust on chambers 16 and 17,

each provided with an inlet port Band and exhaust port 19. ,Thejiulet ports 18. open :through the topfof "an' enlargement 20 -fo'rmed on he upper portion of the cyl-' 1.i nder,-the latter being provided with -a,-fl'at bearingsurface '21 constituting 'a seat for 1 'a fiat oscillating-or disk'valve 2l; A fuel supply pipe 23is connected at one-side of l the enlargement 20 and also opens through, the top of said enlargement, preferably-at a point intermediate the inlet ports 18." The va lve 22 is provided with a laterally extending arm 24 to which ispivotally connected one end of a rod 25, the-opposite end of which is pivotally connected'with a rocker arm 26 mounted on the base 6. The arm 25 is oscillated to effect the movement of the valve 22 by means of an eccentric 27 mounted on the driving shaft 13 and connected intermediate portion of the rocker arm 26", as shown. The valve 92 is pivotally mounted at 29 on the valve seat -21 and" is provided with a segmental or blind slot or channel 30 adapted to register with the inlet ports of each combustion chamber for the purpose 5 of admitting gas or other fluid alternately to' said chambers. The channel or slot 30 is of such a length aud is so disposed with respect to the pivot pin 29-as to b e inconstant communication with the feed port or discharge of the pipe 23 and thus afford a,

source of communication between the sup ply pipe 23 and one of the inlet ports 18, while the other inlet port 18 is closed, thus to permit the ex lesion of the fuelin one combustion chambrand theexha'ust of the products ofcombustion from. the other and vice versa. The valve'22 is thus subjected to 9o through the medium-of a rod 28 with the 7 of the cam 39. Thus the cam will revolve thereon.

bore 16 and 17 are spark plugs 40, each in the combustion chambers 16 and 17.

of the cylinder.

a constantnpward pressure and undue friction thereby prevented between the valve and its seat Slidably mounted in the exhaust ports 19 are valves 31, the stems of which project through the elbows of a connecting pipe 32 for engagement with suitable bell cranklevers 33 pivotally mounted at '34 on a bracket or extension depending from the cylinder. The lower arms of the bell crank levers 33 are connected by a short rod 35, which' is in turn pivotally connected with a rocker arm 36 carried by the supporting base. The arni 36is actuated to alternately open and close the exhaust valves 31 by means of a rod 37 having a ring or yoke 38, which latter surroundsthe driving shaft 13 and is reciprocatcd by a suitable cam 39 Projecting within the combustion chamconnected in a circuit including a battery 41 and spaced contacts 42JThe contacts 42 are actuated by a cam or projection 43 on the driving shaft 13 to make and breakthe circuit and thus alternately ignite the fuel It is to'b'e noted with regard to the valve 22 and the eccentric 27-that while the eccentric 27 gives a co tinuous motion to'- the rod 28 and hence to the valve 22, the recess 30 is'so disposed that there is a considerable period of travel for the valve late 22 before the end of the'recess30 reac es one inlet port after leaving-"the other inlet port. Thus during the greater portion of the travel of the piston neither of the inlet ports is open. These ports are designed to be opened alternately and during the first art of the movement ofthe piston away The means for reciprocating the rod37 whereby the exhaust valves are operated is also formedto provide 'for the actuation of the exhaust valves near theLextremities of the piston travel, leaving the valves in their open position during the greater ortion of the iston stroke. These-valves a so are in ten ed to operate alternately and to open" and close when the piston is near the ends One exhaust valve closes while the other exhaust valve opens as the piston moves away from the first named exaust valve, and the valves remain in this position until the piston nears the opposite end of the cylinder when. the first valve opens and the second valve closes. This movement of theexhaust valves is secured by constructing thecam 39 and the cam ring 38 as' illustrated in Fig. 6. The cam ring 38 is larger indi'ameter than the len th within the cam ring without touching the ring. The ring is provided, however, at 0pposite points in its diameter with the anti--\ rom the opened port and toward the closed port.

friction rollers 38 which project into the path of movement of the cam 39. The cam 39 for a greater portion of its active face is concentric to the shaft 13. As a consequence, the shaft 37 will remain in its last shifted position during a portion of the revolution of the shaft '13 and until one of the rollers 38 engages with the inside face of the cam, whereupon the rod 37 will be moved outward until the roller 38" passes the apex of the cam when it will remain in this position until the cam engages the opposite roller; This provides .for an alternate shifting of the rod 37 in one direction and the other with a rcst'between these-reciprocations. The movement of the rod is not continuous, in other words, but is intermittent.

The eccentric 27, the cam 39 and the crank 14 are so set relatively to each other that during the first portion of the first quarter revolution of the crank arm 15 (in the direction of the arrow, Fig. 2) the valve 22 will be oscillated so as to cause the extremity of the slot 30 to register with. the inlet port of the forward combustion chamber and connect it with the supply pipe 23, thereby ad-' mitting fuel to saidcombustion chamber. As the piston moves rearward, the exhaust valve Wlll close, the inlet valve still remaining open. At the completion of the quarter stroke in the'direction-of the arrow, Fig. 2, the valve 22 willfhave traveled rearward a suflicient distance to cut off communication between the supply pipe-23 and the inlet ort of the forward combustion chamber. Vhile the piston ismoving through the first uarter of its travel, as above indicated, the :oxhaust valve in the rear end of the chamher is opened, though the inlet port to this end of the chamber remains closed. After the inlet port in the forward chamber has closed, the charge is ignited, driving the pis ton rearward. While the piston is moving rearward, the valve 22 is also traveling rear- .w.ard,'and when the piston has reached its rearmost position the extremity of the slot 30 registels with the inlet port in the rear chamber and a fuel charge enters said rear chamber. As the piston moves forward it sucks in the charge and after the exhaust gases have passed out, the exhaust valve in that end of the chamber is closed as before stated, then the inlet valve is closed and the charge in the rear chamber fired to drive the piston forward.

arms 26 and 36, I can secure any desired relative movement between the rods 28 and 35 and the piston rod.

Having thus described the invention, what is claimed as new is: I

A'double acting internal combustion engine comprising a cylinder provided at its side with .an enlargement, inlet ports leading from theface of the enlargement to the each inlet port and the said fuel supply port, interior of the cylinder in the vicinity of the means for moving the valve to establish &

opposite ends thereof, a fuel supply port communication through the channel 15- terminating at the face of the said enlargetween each inlet port-and the fuel supply ment and located midway between the ends port alternately and a piston movably of the said inlet ports, a ivot mounted upon. mounted in the cylinder.

the enlargement, the en s of said inlet ports In testimony whereof I affix'my signature being locatedat equal distance from said in presence of two witnesses.

pivot, a valve'mounted upon the pivot and having in its under face a curvedchannel Witnesses:

CHARLES T. LAUGH'ION. [L.s.]

' concentrically arranged and being of a N. E. NANCE,

length greater than the distance between E. C. LANGSTON.

Copies of this patent may beam/tamed for five cents each, by addressing the Commissioner of Patents Wasliingtou; D. C. 

